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How to Install a Dehumidifier in a Gun Safe

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Many gun owners worry about what will happen to their valuables stored inside a gun safe for a long time. This is particularly important if there are high levels of humidity where you live. After all, too much humidity inside your gun safe can be harmful to your guns, ammo, and accessories. 

A gun safe dehumidifier can solve this problem. No matter what the weather is, you’ll be assured that your valuables inside the gun safe are well protected. This article will show you how to install a dehumidifier in a gun safe. 

How to Install a Dehumidifier in a Gun Safe

First things first, make sure you identify all the parts before you start installing. Check if there’s an instruction manual with your dehumidifier that can help. Before you start, check you’re working on a dry level surface.

Here are several steps to install your dehumidifier in your gun safe: 

  • Put the dehumidifier horizontally and as low as possible inside the safe. 
  • Install the electrical cord through the safe wall. From the inside of the safe, push the end of the cord through the wall to the outside. Most gun safes have a pre-drilled electrical access hole near the bottom of the gun safe. It’s usually located in the rear area. 
  • If you can’t find an access hole, you’ll have to drill one. Some gun safes feature an internal safe outlet so you’ll need to route the cord through the wall of the safe. 
  • Install the mounting clips to hold the rod. The rod must be mounted horizontally and should be as low as possible inside the gun safe. 
  • Make sure to check if the rod will not interfere with any of the safe’s hinges or locking lugs. 
  • Use the included screws to attach the clips to the safe interior. 
  • Snap the rod into the mounting clips.
  • Make sure the end of the wire has a clean-cut end. Never split the wires. 
  • The plug housing has a back cover that you’ll need to remove. 
  • Once you remove the cover, you’ll see 2 prongs. Place the cord into the cavity with the prongs and make sure that you insert the cord as far into the housing as possible. 
  • Begin reinstalling the housing cover and make sure it’s completely shut. The cord should lock inside the plug housing.
  • Plug the dehumidifier rod into a power outlet and it should start working.  

Safety Warnings for Installing a Dehumidifier

Here are some things that you should be aware of before installing a dehumidifier in your gun safe. 

  • Most dehumidifiers are for indoor use and you shouldn’t use them outdoors. 
  • Do not immerse the dehumidifier, plug, or cord in water or any contact with liquids. 
  • Do not use the dehumidifier if in the presence of explosives or flammable fumes.
  • Do not use the dehumidifier if the cord is damaged. 
  • Make sure the dehumidifier is unplugged when installing or handling. 
  • Do not use the plug included with the dehumidifier on other devices.
  • Do not use any other plug on your dehumidifier.  

How to Choose the Right Dehumidifier

There are 2 types of dehumidifiers commonly used inside a gun safe. These are silica gel and rod models. Both have the same purpose but operates differently. It’s up to you to decide your preference and what works best for you and your gun safe

The gel models of dehumidifiers aren’t electrical and you can safely place them anywhere inside your gun safe. They absorb any moisture present in the air and works similar to the little packs of gel you can find on shoe boxes to keep it free from moisture. 

The rod type dehumidifier is an electrical device that warms up the air in the gun safe. This makes the air inside the safe dryer and produces similar results of a gel dehumidifier but is more efficient in removing moisture. 

Why Choose a Dehumidifier

A dehumidifier eliminates moisture from its immediate surroundings. For gun safes, it should be able to soak in moisture from every spot inside the gun safe making it completely dry and free of any humidity. 

Most gun safes are made of metal and they are prone to rust and corrosion if constantly exposed to moisture for too long. Your guns are also made of metal so you’ll be noticing some rusted or chipped parts if exposed to moisture for a long time. 

Using dehumidifiers increases the lifespan of your guns and gun safety. It also keeps the inside of your gun safe smelling fresh and keep your guns in good condition. 

Where to Put Your Dehumidifier 

The different types of dehumidifiers have different best spots where you should place them inside the gun safe. 

You can place Silica gel dehumidifiers anywhere inside your gun safe. Its effectiveness isn’t affected wherever you place them. 

When it comes to dehumidifier rods, they work best when they are on the floor of the gun safe. This allows for the hot air to rise and absorb the humidity of the air inside the gun safe. You also need to make sure it’s near your home electricity supply. 

How Many Dehumidifiers You Should Use

It depends on how big your gun safe is. Most people only use one dehumidifier. However, if you have many guns stored inside, you might consider having 2 or more dehumidifiers. 

It’s best to measure the humidity when the safe is empty and then measure it again after installing a dehumidifier. This will give you a gauge of how many dehumidifiers you should need after you put in your valuables. 


Installing a dehumidifier in your gun safe is an easy task. Most gun safes are catered for installing a dehumidifier so it reduces much of the hassle. Installing a dehumidifier in your gun safe assures that your gun safe and valuables are well-preserved and in good condition.